For this program to work on Mac, you need to install PyGTK. If you don’t already have it installed, you can download and install it from here:
After you have that installed, you should be able to download remotecmd-mac and unzip that into a folder somewhere. From there you can double click the remotecmd.py file to run the program with the python interpreter. You can edit the files arcommands.ini and config.ini using TextEdit and change what you would like. If you use AutoRemote, it is a good idea to fill in your AutoRemote key in the config.ini file, and then setup whatever commands you would like to send in the arcommands.ini file (some defaults are provided).